<a href=http://onlineslangdictionary.com/meaning-definition-of/ragtop>ragtop</a> To link to this term in a wiki such as Wikipedia, insert the following. [http://onlineslangdictionary.com/meaning-definition-of/ragtop ragtop] Some wikis use a different format for links, so be sure to check the documentation.
Talc (1), the softest mineral on the Mohs scale has a hardness greater than gypsum (2) in the direction that is perpendicular to the cleavage. Diamonds (10) also show a variation in hardness (the octahedral faces are harder than the cube faces).
He chose ten common minerals (minerals that anyone interested in minerals is likely to have in their collections) and used them to set up a 'Hardness Scale'! He assigned each of the ten minerals a hardness number from 1 to 10, with 1 being the softest and 10 being the hardest!